September weather forecast
Avondale, MO

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Weather in September

September, the first month of the autumn in Avondale, is still a warm month, with temperature in the range of an average low of 59.5°F (15.3°C) and an average high of 78.4°F (25.8°C).

Temperature

September ushers in a minor alteration in Avondale's climate, with the average high-temperature moving from August's warm 84.7°F (29.3°C) to a still moderately hot 78.4°F (25.8°C). Avondale's average low-temperature during September nights is observed to be a moderate 59.5°F (15.3°C).

Humidity

The average relative humidity in September in Avondale is 74%.

Rainfall

In Avondale, in September, it is raining for 11.5 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, in Avondale, there are 126.5 rainfall days, and 21.65" (550mm) of precipitation is accumulated.

Snowfall

In Avondale, snow does not fall in June through September.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 6:47 am and sunset at 7:48 pm. On the last day of September, in Avondale, sunrise is at 7:13 am and sunset at 7:01 pm CDT.

Sunshine

In September, the average sunshine is 9.4h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 5 during September translates into these guidelines:
Undertake precautions - Guarding against sun damage is counselled. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
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Frequently asked questions

What is the average September temperature in Avondale?

September temperatures in Avondale vary between a high-temperature of 78.4°F (25.8°C) and a low-temperature of 59.5°F (15.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in August is estimated at 95°F (35°C).

What is the average humidity in September in Avondale?

The average relative humidity in September is 74%.

How much does it rain in Avondale in September?

In Avondale, during September, the rain falls for 11.5 days and regularly aggregates up to 1.93" (49mm) of precipitation.

When it does not snow in Avondale?

June through September are months without snowfall in Avondale, Missouri.

Does it snow in Avondale in September?

In Avondale, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Avondale have in September?

In September, the average day length is 12h and 26min.

When is the sunrise / sunset in September in Avondale?

In September, on the first day of the month, sunrise is at 6:47 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:01 pm CDT.

How long on average sun shines in September in Avondale?

The average sunshine duration in September in Avondale is 9.4h.

What is the UV index reading in September in Avondale?

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Avondale, MO

Average temperature in September - Avondale, MO
  • Average high temperature in September: 78.4°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in September: 59.5°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in September
Avondale, MO

Average pressure in September - Avondale, MO
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in September
Avondale, MO

Average wind speed in September - Avondale, MO
  • Average wind speed in September: 7.1mph

The windiest months (with the highest average wind speed) are February, March and April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in September
Avondale, MO

Average humidity in September - Avondale, MO
  • Average humidity in September: 74%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in September
Avondale, MO

Average rainfall in September - Avondale, MO
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in September
Avondale, MO

Average rainfall days in September - Avondale, MO
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (4.8 days).

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Average snowfall in September
Avondale, MO

Average snowfall in September - Avondale, MO
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.13").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Avondale, MO

Average snowfall days in September - Avondale, MO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Avondale, MO

Average daylight in September / Average sunshine in September - Avondale, MO
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in September
Avondale, MO

Average sunshine days in September - Avondale, MO
  • Average sunshine days in September: 17.4 days

The month with the most sunshine days is December (22.1 days).
The month with the least sunshine days is May (11.6 days).

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Average UV index in September
Avondale, MO

Average UV index in September - Avondale, MO
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Avondale, MO

Average cloud cover in September - Avondale, MO
  • Average cloud cover in September: 29

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in September
Avondale, MO

Average visibility in September - Avondale, MO
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Avondale, Missouri, USA

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